IT restrictions should be much more conservatively applied (at least in comparison to what's happening in my neck of the woods). Hear me out.
Of course, if you restrict something in IT, you have a theoretical increase in security. You're reducing the attack surface in some way, shape or form. Usually at the cost of productivity. But also at the cost of the the employees' good will towards the IT department and IT security. Which is an important aspect, since you will never be able to eliminate your attack surface, and employees with good will can be your eyes and ears on the ground.
At my company I've watched restrictions getting tighter and tighter. And yes, it's reduced the attack surface in theory, but holy shit has it ruined my colleagues' attitude towards IT security. "They're constantly finding things to make our job harder." "Honestly, I'm so sick of this shit, let's not bother reporting this, it's not my job anyway." "It will be fine, IT security is taking care of it anyway." "What can go wrong when are computers are so nailed shut?" It didn't used to be this way.
I'm not saying all restrictions are wrong, some definitely do make sense. But many of them have just pissed off my colleagues so much that I worry about their cooperation when shit ends up hitting the fan. "WTF were all these restrictions for that castrated our work then? Fix your shit yourself!"